go-types/test/isNumericTest.js

Type-checking utilities for JavaScript

"use strict";

var assert = require("chai").assert;
var isNumeric = require("../src/isNumeric");

suite("#isNumeric", function () {

    test("true", function () {
        assert.equal(isNumeric(0), true);
        assert.equal(isNumeric(1), true);
        assert.equal(isNumeric(-1), true);
        assert.equal(isNumeric(new Number(0)), true);
        assert.equal(isNumeric("0"), true);
        assert.equal(isNumeric("-1"), true);
        assert.equal(isNumeric("+1"), true);
        assert.equal(isNumeric("+1.234e5"), true);
        assert.equal(isNumeric("-1.234E5"), true);
        assert.equal(isNumeric(" 1 "), true);
        assert.equal(isNumeric(new String("1")), true);

        if (typeof BigInt !== "undefined") {
            assert.equal(isNumeric(BigInt(1)), true);
        }
    });

    test("false", function () {
        assert.equal(isNumeric(), false);
        assert.equal(isNumeric(undefined), false);
        assert.equal(isNumeric(null), false);
        assert.equal(isNumeric({}), false);
        assert.equal(isNumeric([]), false);
        assert.equal(isNumeric(""), false);
        assert.equal(isNumeric(false), false);
        assert.equal(isNumeric(true), false);
        assert.equal(isNumeric(Number.POSITIVE_INFINITY), false);
        assert.equal(isNumeric(Number.NEGATIVE_INFINITY), false);
        assert.equal(isNumeric(Number.NaN), false);
        assert.equal(isNumeric("a1"), false);
        assert.equal(isNumeric("1n"), false);
        assert.equal(isNumeric("null"), false);
    });
});